Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/10—Tube connectors; Tube couplings
  • A61M39/1055—Rotating or swivel joints
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/10—Tube connectors; Tube couplings
  • A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/10—Tube connectors; Tube couplings
  • A61M2039/1033—Swivel nut connectors, e.g. threaded connectors, bayonet-connectors

Definitions

• the invention relates to a connector for medical use. It relates more particularly to a male luer lock connector for cooperating with a female luer connector so as to connect a liquid conduit.
• the first range consists of connectors in which a male luer lock connector is rotatably mounted on a tubular body integral with the fluid inlet manifold.
• the connection is not mobile in translation, only the rotational movement being possible.
• the connection is provided with a thread allowing screwing on the female luer tip.
• an O-ring positioned between the inner surface of the connector and the outer surface of the body. This form of connector is for example described in DE 373 76 65.
• the other range of connector is for example that illustrated in EP-AI 236 481.
• the connector is here not only rotatable on the tubular body but also movable in translation along the body.
• a stop is formed on the body so as to limit the stroke of the ring and therefore its separation from the body. Clamping with the female luer is also done by screwing.
• This type of connector has a major drawback. Indeed, the movable ring, when it is tightened, that is to say when there is a junction between the male luer and the female luer, has a tendency to loosen due to the stress between the internal threads. the ring and the stop limiting its translational movement. In other words, the ring tends to unscrew and no longer plays its locking function. It follows a risk of leakage or even disconnection.
• the invention relates to an improvement of the first range of connectors.
• the devices described in DE 373 76 65 have a number of disadvantages.
• the cost of this type of product is high because of the presence of three parts respectively a body, a connection and a seal.
• the problem to be solved by the invention is to develop a luer lock connector that has no seal so as to reduce the cost of the product, but still remains perfectly sealed and free of any risk of disconnection of the ring relative to the body.
• the Applicant has developed a specific form of the body, cooperating by friction with a corresponding shape formed at the end of the connector and in the absence of any seal.
• the subject of the invention is a connector for medical use comprising: a body secured to a pipe or intended to be connected by one of its ends to a pipe in which a fluid circulates, a male luer lock fitting comprising a base rotatably mounted on the body cooperating by friction with it, without possible movement of translation, the base being secured to a tubular hollow body, whose inner surface is provided with a thread and whose center is provided with a male luer cone.
• This connector is characterized in that it is free of seal and in that the outer surface of the body and the inner surface of the base of the connector, cooperating by friction, have a spherical shape and cylindrical.
• the body of the connector is integral with a pipe or intended to be connected to a pipe.
• first case reference is made to the ramps, faucets or Y-connection whose end directly present the shape of the connector body of the invention.
• second case it is assumed that the body of the connector of the invention is connected by gluing to a flexible tubing in which a fluid flows.
• the essential characteristic of the connector is to present at the body and the base of the connector, a spherical and cylindrical shape. Whether the connector is used for perfusion, which represents the majority of cases, or the sampling, the spherical then cylindrical areas can be arranged in any direction towards the terminal end of the body. One can thus have the spherical part then the cylindrical part just as the opposite. Whatever the shape of the body, the base of the male luer lock connector has a complementary shape cooperating by friction with the corresponding shape of the body.
• the connectors in which the body has a spherical and cylindrical shape towards its free end are more particularly described later.
• the spherical zone of the body is preceded by a connecting zone whose outer surface has any shape, generally conical or cylindrical.
• the flexible tubing is connected in the channel formed in the center of the connection zone.
• the connecting zone is cylindrical and has a diameter d 5 , smaller than the diameter di of the sphere portion of the body.
• the spherical and cylindrical parts are molded directly at the time of manufacture.
• the external surface of the body has at least two successive sections, respectively:
• a second cylindrical section with a diameter d 2 smaller than the internal surface of the base has: a first zone in the form of a portion of sphere of diameter at substantially equal to (I 1 ,
• the sealing and therefore the tightening of the connector on the body of the connector is ensured by close contact between the cylindrical portion of the body and the cylindrical section corresponding to the base of the connector, whose diameter d 3 is slightly smaller than d 2 so that they can be nested one into the other in force.
• the spherical zone fulfills the function of assembly and clipping of the body on the base.
• the external surface of the body has at least three successive sections, respectively:
• the internal surface of the base presents:
• a first zone in the form of a portion of sphere of diameter d 7 substantially
• a second tabular zone of diameter d 3 slightly smaller than d 2 .
• the connector has two sealing zones.
• the first sealing zone is provided by the close contact between the third cylindrical section and the corresponding cylindrical section of the connector base, whose diameter d 3 is slightly less than d 2 .
• the second sealing zone is ensured by the close contact between the edge of the first cylindrical section of diameter d 4 of the body and the spherical shape of the diameter base (I 1 .
• the spherical zone retains its original function. assembly and clipping.
• the spherical zone of the base may be preceded by a preferably tubular zone of internal diameter of less than di, this zone being intended to grip either the pipe of the ramp or the zone.
• Figure 1 is a sectional view of the connector of the invention.
• Figure 2 is a sectional view of the body.
• Figure 3 is a sectional view of the coupling.
• FIG. 1 there is shown a luer lock male connector of the type of that of the invention.
• This connector consists of two separate parts, respectively a body (1) and a male luer connector (2).
• the body (1) is intended to be connected by its end (3) to a not shown fluid pipe.
• the fluid tubing is connected to the body by interlocking and then gluing in the channel (4).
• the body frictionally engages with the base (6) of the coupling (2).
• the contact exerted between the inner surface of the base (6) and the outer surface of the end end (5) of the body (1) is at the origin of the rotation of the connection relative to the body without possibility no translation.
• the male luer connector is a conventional coupling consisting of a hollow body (7) comprising a wall (8), whose inner surface (9) is provided with a thread for screwing and thus blocking the female luer after connection.
• the hollow body further comprises a central channel (10) conical male luer.
• FIG 2 there is shown a section of the body (1).
• this body has four successive distinct zones, respectively, upstream, a so-called tubular outer surface connection zone (11) of diameter ds, then a first cylindrical section (12) of external diameter d 4 greater than d 5 - then a second portion (13) in the form of a portion of sphere of diameter di of the largest section is substantially equal to d 4 and a third section (14) of tubular shape of diameter d 2 less than (I 1 .
• the body is provided at its center with a channel (4) in which the fluid flows.
• This channel has a first section and a lower section (15) of smaller diameter, substantially equal to the section of the male luer channel (10).
• the base (6) has a first zone (16) tubular, the diameter of the internal surface is substantially equal to the diameter d 5 of the area binding of the body. Furthermore, the base has a first section (17) having a spherical shape whose diameter ⁇ is substantially equal to that of the largest section of the sphere portion of diameter di of the body. Finally, the base of the connector has a second tubular zone (18) of tubular shape, whose diameter d 3 is substantially equal to that of the diameter d 2 of the body (1).
• the clipping of the connector (2) on the body (1) creates two sealing zone.
• the superposition of the end cylindrical zone (14) of the body (1) with the corresponding zone (18) of the base ensures the primary sealing of the system because of the diameter d 3 ⁇ d 2 and therefore the force assembly of the two elements by interlocking.
• the interference zone between the cylindrical zone edge (19) of the body and the spherical zone (17) of the base provides a secondary seal.

Landscapes

• Health & Medical Sciences (AREA)
• Heart & Thoracic Surgery (AREA)
• Pulmonology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Hematology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37561767

Family Applications (1)

Country Status (5)

Families Citing this family (14)

Citations (8)

Family Cites Families (4)

• 2006
  • 2006-05-24 FR FR0604659A patent/FR2901481B1/fr not_active Expired - Fee Related
• 2007
  • 2007-05-22 WO PCT/FR2007/051308 patent/WO2007135337A1/fr active Application Filing
  • 2007-05-22 EP EP07766082.7A patent/EP2019706B1/de active Active
  • 2007-05-22 ES ES07766082.7T patent/ES2551477T3/es active Active
  • 2007-05-22 US US12/299,040 patent/US8192421B2/en active Active

Patent Citations (8)

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